Railway-brake mechanism.



E. GARRAU.

RAILWAY BRAKE. MBGHANKSM.

APPLICATION FILED FEB. 2,, 1913v 1,119,242, Patented Dec. 1,1914.

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MW j I Edwa rd (Zr/a u, wy By A TTORNE Y Patented Dec. 1, 1914.

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"A 2 fm E. CARRAU.

RAILWAY BRAKE MECHANISM.

APPLICATION FILED FBB.3,1913.

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BY Wm A TTOR/VEV WITNESSES:

UNITED STATES PATENT OFFICE.

EDWARD CABRAU, OF CATHLAMET, WASHINGTON, ASSIGNOR OF ONE-HALF TO PACIFIC CADEAU, 0F CATHLAMET, WASHINGTON.

RAILWAY-BRAKE MECHANISM.

Specification or Letters Iatent.

Patented Dec. 1 1914.

Application filed February 3, 1913. Serial No. 746,032.

T 0 all whom it may concern:

Be it known that I, EDWARD CARRAU, a citizen of the United States, residin at Cathlamet, in the county of VVahkia um and State of Washington, have invented certain new and useful Improvements in Railway-Brake Mechanism, of which the following is a specification.

This invention has relation to a rail-road train, and refers more particularly to improved means for quickly stopping such train.

The object of my invention, in a broad sense, is to provide means on the locomotive or cars of a train for engaging the rails on which said locomotive and cars travel, for the purpose of stopping the train.

A further object is the provision of means for operating the device from the air system usually employed on rail-road trains.

The further objects and advantageous features of my invention are hereinafter fully described, and drawings are embodied for the purpose of facilitating the perusal of said description, and inorder to enable those versed in the art to readily construct the device.

In the drawings: Figure 1 illustrates, in front elevation, my device in its relation to a rail-road track, Fig. 2 is a side elevation of a wheel-truck embodying my invention, and Fig. vention which will be more fully hereinafter explained.

My invention readily adapts itself for use on any wheel-truck. I show for the sake of simplifying this description a mere outline of a wheel-truck having a transverse member 1, on which an air-cylinder 2 is pendently fixed by suitable bolts 3. The piston of said cylinder is rigid on a pendent rod 4, which at the bottom terminates in a bifurcated head 5. Equidistantly spaced on each side of the cylinder the cross-member 1 carries pendent rods 6, 7, said rods having at the bottom bifurcated heads 8 in which a pair of levers 9 are pivotally hung. The inner ends of said levers journaled on a pin 10 of the bifurcated head 5. A pair of pendent studs 11 are fixed in the cross member 1, and said studs carry heads 12 having bifurcations disposed at right angles to the aforenamed bifurcations. Bolts 13 are fixed in said stud-heads, and a pair of pendent jaws 14, 15 are held suspended from each 3 shows a modification of my inof said bolts in vertical alinement with the rails 16, 17 of the car-track. The outer ends of the levers 9 are made with elongated perforations within which said jaws are held confined, and said jaws have lateral projections 73, 19 for engagement with the levers. The sa jaws are free to slide vertically on the studs 13 by elongating the perforations through which said bolts extend. A still spring 20 is mounted on the piston rod 4 for the purpose of depressing the inner ends of the levers 9, whereby the outer ends of the Latter are caused to rise and in turn to raise the jaws to the position shown in full outline in the drawing. The jaws are yieldingly held separated by interposed springs 21.

The mechanism thus far described holds the jaws elevated and inoperative. It is noticed that a tube 22 extends from the bottom of the air-cylinder 2 to the usual airtank A valve 24 is cut into said tube, and said valve is by a rod 25 operatively connected with a hand-lever 26 positioned above the car-platform. The operator turns said hand-lever, thereby opening the valve, which operation causes air to rush into the cylinder 2 and to raise the piston and piston rod. This in turn causes the levers 9 to tilt, during which movement their outer ends swing downward followed by the jaws 14, 15, which latter drop until checked by their fulcrum-bolts 13. a It is noticed that the said jaws gradually widen toward the bottom,

and as they are confined within the ends of.

the levers 9, they are, during the continued movement of the latter, caused to gradually close. The inner surfaces of the opposed jaws 14, 15 are made with recesses 27, 28 shaped to correspond with the contour of the rails 16, 17. The jaws, in closing, encompass the crown of the said rails, and bring the trait to a quick stop. This condition is shown in dotted outline in Fig. 1.

The valve 24 is made with an exhaust vent for the air in the cylinder 2, and so related that the closing of said valve causes said vent to open, whereupon the spring 20 quickly returns the mechanism to its initial position. This valve construction is well known, and commonly used, no further explanation is therefore thought necessary.

In Fig. 3 is shown a jaw mechanism which varies from the above in the manner of operating the jaws. The jaws 30, 31 are op- 2* ie. SE. is n10 latter was the and umnbc-r ,g mrmed by sud re- Unit in m s? oif iiw zlmrmttw diwe'tribed. the

cmnbinntion with a raihvuycm'. of :1, transverse. imam, bifurcated heads susgmnded from the beam, photaiiy umnntcd dupending from said hggxds, lateral projgc-ctiol'ls integral with said jams, recesses in sad jaws to confoun with the contour of the heads of l'ililWzxJiiQCkS, pendent rods supported by L" Leann, a cylinder attached to the beam, awn opvmbie in said HindPr, :1 rod fired at one end to said piston, a, bifun-mini head attached to the free end of sr d red, 51 coilar attached to 5:21 :75 pistonwod ini'arimwimw the bifurrzzfrd hmd and cylinfim inimil, wring encirr imcrmmiiutc the 0013m- Man i" winuwrtin mvzms frnm 1M 3 r air smppiy, levers pivstr-d n, The head. (:75 mm Plb'iOIhlOd and pendent roda said levers being afiaptr-d to engage the lateral prajections of ths jaws and operate said jaws wrticafly. and means to space apart said. jmvs, substantially as set forth.

In tvstimony whereof I have hareunto afiixed my signature.

EDWARD CARRAU.

In presence off-- D. HUMMER, DAVID E. LOFGREN. 

